IPOL Journal · Image Processing On Line
- published
- 2021-09-21
- reference
- Jose-Luis Lisani, and Jean-Michel Morel, Exploring Patch Similarity in an Image, Image Processing On Line, 11 (2021), pp. 284–316. https://doi.org/10.5201/ipol.2021.325
Communicated by Gregory Randall
Demo edited by Jose-Luis Lisani
Abstract
This article describes an experimental procedure to analyze (and verify) the self-similarity concept in natural images and to explore the Gaussianity of groups of similar patches extracted from a single image. The self-similarity assumption means that most image patches of a sufficient size are repeated, of course not identically, but with small variations. The procedure proposed in this paper, and implemented in the accompanying online demo, permits to explore and visualize these clusters of similar patches in a given image. Thanks to it, a user can select a patch in an image, group all patches similar to it up to a translation, or to an isometry, apply PCA to the group, make visual tests about the Gaussianity of the set of patches, and finally apply EM to the set to see if it is a mixture of Gaussians.
Download
- full text manuscript: PDF low-res. (1.1MB) PDF (10.7MB) [?]
- source code: TAR/GZ
History
- Note from the editor: the manuscript was updated on November 21, 2021 to add information about the article and demo editors. The original version of the paper is available from here.
